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Umbilical cord shortening: quantification postdelivery and postfixation.

Andrew Downey1, Kevin Hore, Fionnuala M McAuliffe

  • 11  UCD Obstetrics and Gynaecology, School of Medicine and Medical Science, University College Dublin, and National Maternity Hospital, Dublin, Ireland.

Pediatric and Developmental Pathology : the Official Journal of the Society for Pediatric Pathology and the Paediatric Pathology Society
|April 1, 2014
PubMed
Summary
This summary is machine-generated.

Umbilical cord length measurements change significantly over time and with formalin fixation. Standardizing measurement timing and fixation status is crucial for accurate clinical assessments of cord length.

Keywords:
cord lengthformalin fixationshortening

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Area of Science:

  • Perinatal Medicine
  • Obstetrics
  • Developmental Biology

Background:

  • Umbilical cord length is a critical clinical parameter.
  • Variability in measurement due to time and fixation is not well understood.
  • Accurate cord length is vital for diagnosing conditions like long or short umbilical cord.

Purpose of the Study:

  • To investigate the impact of time and formalin fixation on umbilical cord length measurements.
  • To establish the significance of measurement timing and fixation in routine practice.
  • To provide data for standardizing cord length assessment.

Main Methods:

  • Measurement of 90 umbilical cords from singleton term pregnancies.
  • Cords measured within 5 minutes of delivery, at 1-2 hours (fresh state), and after 24-48 hours of formalin fixation.
  • Statistical analysis to determine significance of length changes.

Main Results:

  • Mean cord length at delivery was 536.7 mm.
  • Significant mean cord shortening of 17.6 mm (3%) occurred by 1-2 hours post-delivery (P < 0.001).
  • Significant mean cord shortening of 62.2 mm (12%) occurred after formalin fixation (P < 0.001).

Conclusions:

  • Both time elapsed since delivery and formalin fixation significantly reduce measured umbilical cord length.
  • Standardization of measurement time and fixation status is essential for reliable cord length data.
  • Future studies must report measurement timing and fixation status for accurate interpretation.